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Finding the Fourth Proportional to 225,478.85, 311,149.67 and 123,504.75

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Solution

The fourth proportional to 225,478.85, 311,149.67 and 123,504.75 is: 170,430.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,478.85 : 311,149.67 = 123,504.75 : x
  2. Step 2: Convert to fraction form
    225,478.85/311,149.67 = 123,504.75/x
  3. Step 3: Cross multiply
    225,478.85x = 311,149.67 × 123,504.75
  4. Step 4: Simplify right side
    225,478.85x = 38,428,461,588.41
  5. Step 5: Solve for x
    x = 38,428,461,588.41/225,478.85
  6. Step 6: Final answer
    x = 170,430.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.